Meroterpenoids from and their anti-inflammatory activities.

Three meroterpenoids, including one new compound, ranhuadujuanine E (), one new natural product, methyl ()-3-(3,7-dimethylocta-2,6-dien-1-yl)-2,4-dihydroxy-6-methylbenzoate (), and one known compound, ranhuadujuanine D (), along with two known sesquiterpenoids (-) were isolated from . Their structures were elucidated on the basis of extensive spectroscopic analysis, and the absolute configuration of C-6' in compound was assigned by using Snatzke's method. Compounds - had inhibitory effects on LPS-induced NO release in RAW264.7 cells.